Not importing xml file - using Import Blogger to Wordpress

Hello, I have a big problem. Try to upload my xml blogger file into wordpress using the plugin.

"Howdy! Upload your Blogger Exported XML file and we’ll import the contents from it into this site.

Choose an XML file to upload, then click Upload file and import". Ok, fine for the moment. But…when i select the file i want to import doesnt’t take me to the Authorise Screen. It does nothing. I tried to import a different xml file ( from another blog of mine) and all is working fine.

The file i tried to import does not excceds the maximum size of 105 MB.

Can anyone help me, plese???